Jennifer Muir wrote:
>But on the serious side, I'm sure its recognised by Birding-Aussers that
>animals have a purpose in (almost) everything they do - basically related
>to survival or maintaining the species. And as activities take energy, and
>the source of that energy, food, is not as easily available, one could say,
>as it is to us, animals must be as efficient as possible in their use of
>that energy. So, we ask what is the survival or reproduction purpose of
>the Cockatoo carrying a pink rose?
All no doubt true, but it sounds terribly "ecologic rationalist".
But on a more serious note: Maybe it is the case, particularly for birds
such as galahs, cockatoos and certain other parrots that have benefited
from human activities, that there is an abundance of food available to them
(presumably nest sites and other factors become limiting) and they have
energy to spare - and therefore to have fun!
...And I loved your two anecdotes about the galahs and keas!!!
Harvey
..........................................
Dr Harvey D. Perkins
Divn Biochemistry & Molecular Biology
Faculty of Science
Australian National University
Canberra, ACT, 0200, Australia
ph:(02) 6249 2693; fax:(02) 6249 0313
email:
...........................................................................
|
